Automatic Cyclic Crack Propagation Calculations in Aircraft Engines

Abstract:

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This document describes a mixed-element approach to perform mixed-mode crack propagation calculations in an arbitrary structure in a fully automatic way. In a preprocessing step a cylindrical volume about the crack front is meshed with hexahedral elements while the remaining parts of the structure at interest are filled with tetrahedrons. Subsequently, a finite element calculation is performed yielding the stress field at the crack tip. The postprocessor determines the stress intensity factors and the 3-dimensional crack growth, leading to a new crack front. This procedure is repeated until a user-defined criterion is reached. The method is illustrated by an aircraft casing component.

Info:

Periodical:

Key Engineering Materials (Volumes 417-418)

Edited by:

M.H Aliabadi, S. Abela, S. Baragetti, M. Guagliano and Han-Seung Lee

Pages:

733-736

DOI:

10.4028/www.scientific.net/KEM.417-418.733

Citation:

G. Dhondt and D. Bremberg, "Automatic Cyclic Crack Propagation Calculations in Aircraft Engines", Key Engineering Materials, Vols. 417-418, pp. 733-736, 2010

Online since:

October 2009

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Price:

$35.00

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